I upgraded my OEM 2005 Cayenne PCM radio to the new PCCM+, you can read about my journey here. . .
https://forums.pelicanparts.com/porsche-cayenne-macan-forum/1136481-pccm-getting-installed-today.html
The problem I am having is my AM reception is non existent.
The dealer did the install and was unable to correct the problem when I took the vehicle back. In fact, they told me AM reception is poor in Los Angeles.
I removed the rear spoiler and located what I believe to be the AM radio antenna.
I moved this tan wire around and the reception did change depending on the position.
Question: Is there a way to splice wire to this antenna to improve reception? I cannot see the connection where this antenna connects to the audio system.